45 ACP with SP primer pockets

Active Member

Anyone able to share experience with reloading 45 ACP brass that have small pistol primer pockets? I picked up a few hundred brass with SPP pockets and would like to get a sense of whether this poses any problems. Thanks!

Active Member

What is the head stamp? They might also be Winchester NT (Non Toxic) If so they will likely have a different size flash hole. Speer also makes some .45 brass that has SP pockets. Can you give more info about the brass?

Bronze SupporterBronze Supporter

AAAARRRRGGGGHHHHH!!! Spawn of the devil (along with berdan primed
9mm).

I buy "mixed brass" for my 45's. I'll be cruisin' along loading up a few hundred
on my Dillon 550, and get one of the small pocket cases in the mix. CLUNK.
Really puts a kink in my normally happy mood.

Well-Known Member

I hear you. I'm really anal with all calibers. I buy only indoor range pickup, matched head stamps (except for LC 5.56 which you can tell is once fired by the crimp.)

I find that mixed brands of brass have different thicknesses of brass and therefore different inside volumes. The smaller the volume, the faster pressure builds, and the faster the bullet accelerates, and the rounds all chrony differently and they shoot to different points of aim.

Since I can reload brass several times, the cost per round is really cheap. Why bother with oddball stuff? Why not have matched speeds in fps and the same point of aim?

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